Polyvinyl alcohol-induced low temperature synthesis of CeO2-based powders

被引：26

作者：

Ma, Jianjun ^{[1
]}

Jiang, Cairong ^{[1
]}

Zhou, Xiaoliang ^{[1
]}

Meng, Guangyao ^{[1
]}

Liu, Xingqin ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2006年 / 162卷 / 02期

基金：

中国国家自然科学基金;

关键词：

combustion synthesis; conductivity; solid oxide fuel cells; polyvinyl alcohol; Ce0.8Sm0.2O1.9; powders;

D O I：

10.1016/j.jpowsour.2006.07.050

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ce0.8Sm0.2O1.9 (SDC) powders have been synthesized by a combustion method with polyvinyl alcohol (PVA) as the fuel and nitrate as oxidizer. A calcination temperature of 350 degrees C was found to be sufficient for the formation of pure SDC powders. The cell parameters were calculated using the peak positions determined from the XRD patterns, and it was found that stoichiometric SDC powder could be obtained only when stoichiometric PVA fuel contents were used. The as-prepared SDC pellets exhibited 98% of the theoretical density sintered at 1300 degrees C. This shows that the SDC powders obtained by this combustion method have excellent sintering properties, which can densified at a relatively low sintering temperature. The powders made by this method, due to its high conductivity of 0.033 S cm(-1) at 700 degrees C, are suitable for intermediate temperature solid oxide fuel cells (IT-SOFCs). (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1082 / 1087

页数：6

共 25 条

[1] Characterization of CeO2-ZrO2 mixed oxides.: Comparison of the citrate and sol-gel preparation methods [J].

Alifanti, M ;

Baps, B ;

Blangenois, N ;

Naud, J ;

Grange, P ;

Delmon, B .

CHEMISTRY OF MATERIALS, 2003, 15 (02) :395-403

[2] Combustion synthesis and properties of nanostructured ceria-zirconia solid solutions [J].

Aruna, ST ;

Patil, KC .

NANOSTRUCTURED MATERIALS, 1998, 10 (06) :955-964

[3] Combustion synthesis and characterization of nanocrystalline CeO2-based powders via ethylene glycol-nitrate process [J].

Chen, WF ;

Li, FS ;

Yu, JY .

MATERIALS LETTERS, 2006, 60 (01) :57-62

[4] Microstructure - Ionic conductivity relationships in ceria-gadolinia electrolytes [J].

Christie, GM ;

vanBerkel, FPF .

SOLID STATE IONICS, 1996, 83 (1-2) :17-27

[5] Microwave-induced combustion synthesis of Ce1-xSMxO2-x/2 powder and its characterization [J].

Chung, DY ;

Lee, EH .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 374 (1-2) :69-73

[6] ELECTRICAL-PROPERTIES OF CERIA-BASED OXIDES AND THEIR APPLICATION TO SOLID OXIDE FUEL-CELLS [J].

EGUCHI, K ;

SETOGUCHI, T ;

INOUE, T ;

ARAI, H .

SOLID STATE IONICS, 1992, 52 (1-3) :165-172

[7]

FU YP, IN PRESS J POWER SOU

[8] Hydrothermal synthesis and properties of Ce1-xSmxO2-x/2 and Ce1-xCaxO2-x solid solutions [J].

Huang, W ;

Shuk, P ;

Greenblatt, M .

CHEMISTRY OF MATERIALS, 1997, 9 (10) :2240-2245

[9] Development of a novel combustion synthesis method for synthesizing of ceramic oxide powders [J].

Hwang, CC ;

Wu, TY ;

Wan, J ;

Tsai, JS .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2004, 111 (01) :49-56

[10] Sintering temperature, microstructure and resistivity of polycrystalline Sm0.2Ce0.8O1.9 as SOFC's electrolyte [J].

Jung, GB ;

Huang, TJ .

JOURNAL OF MATERIALS SCIENCE, 2003, 38 (11) :2461-2468

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